Is there anything wrong with a class with all static methods?

Question

I\'m doing code review and came across a class that uses all static methods. The entrance method takes several arguments and then starts calling the other static methods passin

Answer 1

No, many people tend to create completely static classes for utility functions that they wish to group under a related namespace. There are many valid reasons for having completely static classes.

One thing to consider in C# is that many classes previously written completely static are now eligible to be considered as .net extension classes which are also at their heart still static classes. A lot of the Linq extensions are based on this.

An example:

namespace Utils {
    public static class IntUtils        {
            public static bool IsLessThanZero(this int source)
            {
                return (source < 0);
            }
    }
}

Which then allows you to simply do the following:

var intTest = 0;
var blNegative = intTest.IsLessThanZero();